Car-truck frame.



G. H. HOWARD & H. M. PPLAGER.

GAR TRUCK FRAME. APPLIUATIN FILED4 JUNI 19, 1912.

y.Patented Feb. 11e, 1913.

MW/ k e e. a a e e e H 6 E 5 epe. m w

union LAnENcE H. nomma :Hamm m. PFLAGEB, or'sr. LOUIS, MrssoUm, AssiGNonsj TO COMMONWEALTH STEEL COMPANY,

or NEW' JERSEY.

Speeication of Letters Patent.v

Application-med June 19, 1912. Serial No. 704,691.

OF ST. LOUIS, MISSOURI, .A CORPORATION ,cmnucx FRAME.

'To all lwhom it may concern Be it known that we, CLARENCE H. How- Ann and HARRY M.-I PFLAGER, citizens of the.

United States, residing' at "St Louis, Missouri,

ful Improvementin Car-Truck Frames, of

whichv the following is afull, clear, vand exact` description, such as will enable others skilled inthe art to which'it appert-ainstor make and use the same, reference being had to the accompanying drawings, forming part of this specication, in which- Figure 1 is a plan view of a car truck frame of our improved construction. Fig. 2 isavertical section taken onAlthe line 2-2 of Fig. 1. Fig. 3 .is a cross section taken on the line 3-3 of Fig. 1. lFigari is an enlarged detail section taken onv the line 4-4 of Fi. l. y ur invention relates to a railway car truck frame of the six-wheel type, the principal object of our invention beingr to provide a comparatively simple truck frame' l soms, but 1n our improved construction ,the

comprising wheel pieces, end rails and an X-shaped center member or bolster, which latter carries the center bearing, all of which parts are cast integral, thereby forming a one-piece structure having great strengthand rigidity -combined/ with light-ness of.

transversely disposed transom members are dispensed with and the bolster member which is formed integral with the wheel pieces is made up of pairs of-diverging arms or legs, and therefore performs the functipns of bothI transoms and a center bolster, thereby greatly simplifying and cheapening the cost of manufacture of truck frames and" providing a six.wheel truck frame having a much shorter wheel base than the types of six-wheel trucks now in general use.

By constructing` a truck without transoms, and byj-forming the center bolster integral have-invented a certain new and use` with the wheel pieces of the truck frame, the swing hangers ordinarily used for support-l lingthevtruck bolster are eliminated, thereby permitting the wheel base of the truck -to be materially reduced, and this arrangement enables the truck to traverse curves with less resistance-than a truck of comparatively long' wheel base, and likewise, -the truck having the comparatively short wheel base can traverse shorter curves than a longer truck. "The truck frame herein-shown and described is of the same general type and is an improvement upon the truck frames shown'in United States Patents Nos. 774,492 and 903,191. As shown in the accompanying drawings, our improved truck frame-comprisesfside rails or Wheel pieces 1, end rails 2 and an -X-shaped bolster member 3, all of which Patented Feb. 11,1913."

parts are formed integral, preferably Aby the end pieces 2, the central portions of' which occupy a plane slightly below the plane occupied by the wheel pieces,`are -likewise channel-shaped in cross section. -Formed integral with the end pieces 1 at points near `their ends arel pairs of depending ears or lugs 4 towhich the upper ends of the lbrake hangers, are pivotally connected. The central portion of the X-shaped center bolster is provided with a center bearing plate 5, and the ends of the arms or legs of the-bolster unite with the Wheel pieces 1 at points adjacent to fthe equalizer spring caps 6, which latter are formedintegral with the undersides offsaid wheel pieces.

The arms or legs of the center bolster 3 are preferably of I-beam shape in cross sec- ,t-ion, but it will be readily understood that these parts, as Well as the wheel `pieces and end rails, may be of any desired shape in cross section, as, for instance, I, T, AL, Z or 'of inverted U-shape.

'Formed integral with a pair of the arms -or legs of the' center bolster are pairs of de* ApendingI ears or lugs 7 to which the upper ends of the brake hangers for the center truck wheels are pivotally connected.

The/seaman 8 (which Iform no perror our invention) are xed tothe wheel pieces in anysuitable manner, and formed inthe y undersides of said wheel pieces at the points where said pedestals are attached are recesses 9 in order to accommodate the ends of the equalizing bars 12,which latter are arranged between the journalfboxes that are arrangedl beween the pedestal jaws. Iny order to reinforce and strengthen the wheel pieces at the points where the same are recessed, as ju`st. described, vertically'disposed, longitudinally extending walls or webs 13 are formed in;

tegral .with the inner edges of the flanges of Vsaid .wheel pieces, and. said webs or-walls extend slightly. beyond the ends of the recesses. l f The usual heavy coil springs 14. are 1nterposed between the equalizing bars and the wheel pieces l, the'upper ends of which l springsbear against thepring caps 6.

A' truck frame of our improved construction iscomparatively simple,.can be easily vand cheaply produced for the reason that its essential parts are formed in a single iece, and by forming the center bolsterV -shape and Spreading the ends of the arms ar legs thereof, -the usual transom members are dispensed with, thereby producing a comparatively short truck frame, Vwhich construction is particularly desirable in six-y A wheel trucks for .the reason that a truck having a comparatively short wheel base will traverse curves with 'much less resistance'and will take much shorter curves than trucks of comparatively long' wheel, base.

. lIt will be readily understood that minor changes `in the size, form and construction of the various parts of our improved truck adjacent to -the points where the ends of the bolster member unite with the wheel all of which parts are cast integral.

:2. The hereindescribed truck frame comprising wheel pieces, end rails, brake hanger lugs on said end rails, and an fX-shaped bolster member, all of which part-s are east integral.

3. In a truck frame of the class described,

pieces,

a pair ofwheel pieces, a pair of end'rails,

brake hanger lugs depending from said end rails, an X-shaped bolster member, Aand pairs of brake hangerlugsn said bolster member, all kofvhich partsare cast integral.

4. In a truck frame of the class described, a pair-'of wheel pieces, and a pair of crossed `member, the ends of rails united to form a bolster member, the

the ends of 'which rails are integral^with said wheel pieces, and a'centerbealing yplate on saidrails at, the intersect.

6. As' a new article-of manufacture ja points where the same:

4truck frame cast in a single piece and comprising a pair of wheel pieces, and an shaped bolster member;A the ends of which i are joined to the wheel pieces vat points between the transverse planes occupied by the axles of the truck. l'

7. In atruck frame the combination with 'A a reet'angularframe, of an X-shaped bolster member, the ends of the arms of which are integral with the side rails of the frame and spring seats integral with the side 4rails of e frame adJacent to the ends of the arms of said bolster member.

8. In a truck frame the combination with a rectangular frame, of an X-shaped bolster member,'the ends of the arms of which are integral with the side rails of the frame, a center bearing plate on the X-shaped bolster member and spring seats integral with the side rails of the frameadjacent to the ends of the arms ofthe bolster member.

9. In a truck frame the combination with a rectangular frame ofan X-sha ed bolster the arms ofpwhich are integral with t-he side rails of theframe, and pairs'of brake hanger lugs on said bolster member.

10. In a truck frame, a rectangular frame,

lan vX-shapel bolster member integral with said frame, brake hanger lugs integral with said bolster member, brake hanger lugsintegral witlrthe frame, and a center bearing v plate integral with said bo ster member.

11. In a.' truck frame,'a rectangular frame, an X-shaped bolster member integral with said frame," and pairs of b' integral -wlth said bolster member.

l2. In a truck frame, a rectangular frame, an X-shaped bolster member' integral therewith, a center bearing plate integral with the bolster member, A

and palrs of` brakev hanger lugs integral with said bolster member. l

13. Ina truck frame, an X-shaped bolster member integral therewith, a center bearing plate 0n said bolster member, pairs ofbrake hanger lugs on said bolster member, and pairs of brake hanger lugs on the end -rails of the' rectangular frame.

14. As a new article of manufacture, an integral one-piece. truck frame comprising a pair of wheel pieces, and an X-shaped bolster a rectangular frame,

rake hanger lugs v member, the ens of the arms vof which are our signatures in the presence of two Witunted Wth'sad Wheel pieces. nes'ses, this 28th day of May, 1912. 15. AS a, new article Of manufacture, an H integral 'one-plece truckI frame comprising HARRY M PF'LAGER Wheel pieces, end fails and an X-shaped bolster member, the ends of the arms of Witnesses: which are united with said Wheel pieces. HALA C. BELLVILLE,

In testlmony whereof we hereunto ax FRED H. BLANKE'NHORN. 

